2. The pulse rates of 171 randomly selected adult males vary from a low of 42  bpm to a high of 110 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 959%confidence that the sample mean is within 2 bpm of the population mean Find the sample size using the range rule of thumb to estimate σ  n=

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2. The pulse rates of 171 randomly selected adult males vary from a low of 42  bpm to a high of 110 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 959%
confidence that the sample mean is within 2 bpm of the population mean
Find the sample size using the range rule of thumb to estimate σ 
n=

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